Unlock instant, AI-driven research and patent intelligence for your innovation.

Eatable packaging film with function of shielding ultraviolet radiation prepared from grain, protein

A protein and ultraviolet technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve problems such as endangering the ecological environment and flooding of plastic waste, and achieve excellent mechanical properties

Inactive Publication Date: 2007-12-26
ZHEJIANG UNIV
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The extensive use of plastic packaging has caused the flood of plastic waste and seriously endangered the ecological environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Taking by weighing 2g gluten powder (product of Shanghai Wangwei Food Co., Ltd.) and adding 18g concentration is 10% ammoniacal liquor, is made into the solution that protein concentration is 10%, adds 0.04g food-grade titanium dioxide particle (Shanghai Jianghu Titanium White Chemical Co., Ltd. Co., Ltd. product) and 0.2g glycerol, electromagnetically stirred for 30min to disperse the titanium dioxide particles and glycerol evenly, centrifuged at 4000 rpm for 15min to degas, poured the solution on a smooth polyethylene plate, dried at 30°C for 5 days to remove moisture, heat treatment at 140°C for 10 minutes after peeling off the film. The thickness of the film is 30 μm, and the test result of the electronic tensile machine shows that the tensile strength of the film is 6±0.7MPa, and the elongation at break is 134±5%.

Embodiment 2

[0027] Weigh 20g of rice protein powder (product of Hangzhou Sanfu Biochemical Products Co., Ltd.) and add 380g of 20% ammonia water to form a solution with a protein concentration of 5%. Add 0.02g of food-grade titanium dioxide particles and 6g of glycerin, and stir for 30 minutes Uniformly disperse titanium dioxide particles and glycerin, degas by centrifugation at 4000 rpm for 15 minutes, pour the solution on a smooth polystyrene plate, dry at 80°C for 2 days to remove moisture, peel off the film and heat-treat at 100°C for 30 minutes . The thickness of the film is 50 μm, and the test result of the electronic tensile machine shows that the tensile strength of the film is 2.4±0.1MPa, and the elongation at break is 205±13%.

Embodiment 3～6

[0029] Wheat prolamin, hordein, zein or kafirin were used instead of gluten respectively, and other conditions were the same as in Example 1.

[0030] The invention provides an edible packaging film of cereal protein with ultraviolet shielding function and a preparation method thereof. The main raw material cereal protein involved in the present invention belongs to renewable agricultural resources and has a wide range of sources; the preparation method and technological process of the edible packaging film of cereal protein involved in the present invention are simple, the production cost is low, and it is easy to popularize and implement. The edible packaging film of cereal protein prepared by the invention and the preparation method thereof have excellent ultraviolet shielding function and have broad prospects in the field of edible packaging films.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

This invention discloses a method for preparing UV-blocking cereal protein edible package film, which comprises: cereal protein 100 parts, food grade TiO2 particles 0.1-2 parts, and glycerol 10-30 parts. The method comprises: adding food grade TiO2 particles and glycerol into ammonia solution of cereal protein, casting the solution onto a smooth plastic plate, drying to form a film, and performing thermal treatment to crosslink the film. The cereal protein is a kind of renewable agricultural resource, and has a wide source. The obtained cereal protein edible package film has excellent UV-blocking function, and has wide applications in the eduble package film field.

Description

technical field [0001] The invention relates to an edible packaging film of cereal protein with ultraviolet shielding function and a preparation method thereof. Background technique [0002] The extensive use of plastic packaging has caused the flood of plastic waste and seriously endangered the ecological environment. After the 1990s, "environment and development" became the focus of world attention. It has become one of the development trends of the food packaging industry to replace traditional plastic packaging with edible material packaging and develop so-called "green packaging materials". In the research and development of many "green packaging materials", the application of natural biopolymers to make edible packaging films is an important topic in the development of new food packaging technologies. Edible packaging materials have good mechanical properties and functions of moisture-proof, oxygen barrier, fresh-keeping, and UV protection, which can prevent food fro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08J5/18C08L89/00C08K3/22B65D65/46
Inventor 宋义虎郑强
Owner ZHEJIANG UNIV